class TestA {
public void start() { System.out.println(”TestA”); }
}
public class TestB extends TestA {
public void start() { System.out.println(”TestB”); }
public static void main(String[] args) {
((TestA)new TestB()).start();
}
}
What is the result?()
A. TestA
B. TestB
C. Compilation fails.
D. An exception is thrown at runtime.